106 lines
2.5 KiB
C
Executable file
106 lines
2.5 KiB
C
Executable file
/*
|
|
* SPI bus interface to Cirrus Logic CS35L41 codec
|
|
*
|
|
* Copyright 2017 Cirrus Logic
|
|
*
|
|
* Author: David Rhodes <david.rhodes@cirrus.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/err.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <linux/module.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/of.h>
|
|
#include <linux/regulator/consumer.h>
|
|
|
|
#include "wm_adsp.h"
|
|
#include "sound/cs35l41.h"
|
|
#include "cs35l41.h"
|
|
|
|
static struct regmap_config cs35l41_regmap_spi = {
|
|
.reg_bits = 32,
|
|
.val_bits = 32,
|
|
.pad_bits = 16,
|
|
.reg_stride = 4,
|
|
.reg_format_endian = REGMAP_ENDIAN_BIG,
|
|
.val_format_endian = REGMAP_ENDIAN_BIG,
|
|
.max_register = CS35L41_LASTREG,
|
|
.reg_defaults = cs35l41_reg,
|
|
.num_reg_defaults = ARRAY_SIZE(cs35l41_reg),
|
|
.volatile_reg = cs35l41_volatile_reg,
|
|
.readable_reg = cs35l41_readable_reg,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
|
|
static const struct of_device_id cs35l41_of_match[] = {
|
|
{.compatible = "cirrus,cs35l40"},
|
|
{.compatible = "cirrus,cs35l41"},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, cs35l41_of_match);
|
|
|
|
static const struct spi_device_id cs35l41_id_spi[] = {
|
|
{"cs35l40", 0},
|
|
{"cs35l41", 0},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(spi, cs35l41_id_spi);
|
|
|
|
static int cs35l41_spi_probe(struct spi_device *spi)
|
|
{
|
|
const struct regmap_config *regmap_config = &cs35l41_regmap_spi;
|
|
struct cs35l41_private *cs35l41;
|
|
int ret;
|
|
|
|
cs35l41 = devm_kzalloc(&spi->dev,
|
|
sizeof(struct cs35l41_private),
|
|
GFP_KERNEL);
|
|
if (cs35l41 == NULL)
|
|
return -ENOMEM;
|
|
|
|
spi_set_drvdata(spi, cs35l41);
|
|
cs35l41->regmap = devm_regmap_init_spi(spi, regmap_config);
|
|
if (IS_ERR(cs35l41->regmap)) {
|
|
ret = PTR_ERR(cs35l41->regmap);
|
|
dev_err(&spi->dev, "Failed to allocate register map: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
cs35l41->dev = &spi->dev;
|
|
cs35l41->irq = spi->irq;
|
|
|
|
dev_info(&spi->dev, "CS35L41 SPI MFD probe\n");
|
|
|
|
return cs35l41_probe(cs35l41);
|
|
}
|
|
|
|
static int cs35l41_spi_remove(struct spi_device *spi)
|
|
{
|
|
struct cs35l41_private *cs35l41 = spi_get_drvdata(spi);
|
|
|
|
return cs35l41_remove(cs35l41);
|
|
}
|
|
|
|
static struct spi_driver cs35l41_spi_driver = {
|
|
.driver = {
|
|
.name = "cs35l41",
|
|
.of_match_table = cs35l41_of_match,
|
|
},
|
|
.id_table = cs35l41_id_spi,
|
|
.probe = cs35l41_spi_probe,
|
|
.remove = cs35l41_spi_remove,
|
|
};
|
|
|
|
module_spi_driver(cs35l41_spi_driver);
|
|
|
|
MODULE_DESCRIPTION("SPI CS35L41 driver");
|
|
MODULE_AUTHOR("David Rhodes, Cirrus Logic Inc, <david.rhodes@cirrus.com>");
|
|
MODULE_LICENSE("GPL");
|